Intermittent emission of particles from a Bose-Einstein condensate in a one-dimensional lattice
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2022
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| _version_ | 1866911831407198208 |
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| author | Lai, L. Q. Li, Z. Liu, Q. H. Yu, Y. B. |
| author_facet | Lai, L. Q. Li, Z. Liu, Q. H. Yu, Y. B. |
| contents | We investigate particle emission from a Bose-Einstein condensate with periodically modulated interactions in a one-dimensional lattice. Within perturbative analysis, which leads to instabilities for discrete modes, we obtain the main regimes where the system can emit a large particle jet, and find that the emission is distinctly intermittent rather than continuous. The time evolution of the trapped particles exhibits a stair-like decay, and a larger drive induces a more significant intermittency. We further shed light on the dynamics of the stimulating process, and demonstrate that instead of a real suspension, the intermittency represents a build-up stage of the system. The theoretical framework might be generalized to the explorations on multiple-site systems with analogous configurations and couplings, and offer new insights into other fundamental nonequilibrium problems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2211_03386 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Intermittent emission of particles from a Bose-Einstein condensate in a one-dimensional lattice Lai, L. Q. Li, Z. Liu, Q. H. Yu, Y. B. Quantum Gases We investigate particle emission from a Bose-Einstein condensate with periodically modulated interactions in a one-dimensional lattice. Within perturbative analysis, which leads to instabilities for discrete modes, we obtain the main regimes where the system can emit a large particle jet, and find that the emission is distinctly intermittent rather than continuous. The time evolution of the trapped particles exhibits a stair-like decay, and a larger drive induces a more significant intermittency. We further shed light on the dynamics of the stimulating process, and demonstrate that instead of a real suspension, the intermittency represents a build-up stage of the system. The theoretical framework might be generalized to the explorations on multiple-site systems with analogous configurations and couplings, and offer new insights into other fundamental nonequilibrium problems. |
| title | Intermittent emission of particles from a Bose-Einstein condensate in a one-dimensional lattice |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2211.03386 |